Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores

Greg Heins; D Ionel; Mark Thiele

doi:10.1109/ECCE.2013.6647382

Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores

Greg Heins, D Ionel, Mark Thiele

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper published in Proceedings

Abstract

Removing some sections of the stator yoke in a permanent magnet brushless machine can be beneficial for reducing punching waste and simplifying motor manufacture. However in some cases, restricting the possible flux paths in this way will have a detrimental impact on the torque and air-gap harmonics. This paper discusses the potential implications of modular stator core arrangements and presents the air-gap flux density harmonics and winding factors for potential slot/pole combinations. FEA simulations are presented to support the analytical calculations. The analysis suggests that the performance reduction from using a modular stator is minimal when the number of slots and poles are similar but drops off substantially when this is not the case. A modular core stator will increase the MMF sub-harmonics due to the magnet field but can reduce the sub-harmonics due to the armature if a single layer winding is used. The effect of slotting is very similar for a modular and conventional core machine and FEA results match previously published analytical analyses.

Original language	English
Title of host publication	Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Publisher	IEEE, Institute of Electrical and Electronics Engineers
Pages	5048-5055
Number of pages	8
ISBN (Print)	978-147990335-1
DOIs	https://doi.org/10.1109/ECCE.2013.6647382
Publication status	Published - 2013
Event	IEEE Energy Conversion Congress and Exposition (ECCE 2013) - Denver, Colarado, Denver, United States Duration: 15 Sep 2013 → 19 Sep 2013 Conference number: 2013

Conference

Conference	IEEE Energy Conversion Congress and Exposition (ECCE 2013)
Abbreviated title	ECCE
Country	United States
City	Denver
Period	15/09/13 → 19/09/13

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Heins, G., Ionel, D., & Thiele, M. (2013). Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores. In Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE (pp. 5048-5055). IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ECCE.2013.6647382

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title = "Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores",

abstract = "Removing some sections of the stator yoke in a permanent magnet brushless machine can be beneficial for reducing punching waste and simplifying motor manufacture. However in some cases, restricting the possible flux paths in this way will have a detrimental impact on the torque and air-gap harmonics. This paper discusses the potential implications of modular stator core arrangements and presents the air-gap flux density harmonics and winding factors for potential slot/pole combinations. FEA simulations are presented to support the analytical calculations. The analysis suggests that the performance reduction from using a modular stator is minimal when the number of slots and poles are similar but drops off substantially when this is not the case. A modular core stator will increase the MMF sub-harmonics due to the magnet field but can reduce the sub-harmonics due to the armature if a single layer winding is used. The effect of slotting is very similar for a modular and conventional core machine and FEA results match previously published analytical analyses. ",

keywords = "Air-gap flux densities, Analytical analysis, Analytical calculation, Concentrated winding, FEA simulation, Modular stators, Permanent-magnet brushless machines, Winding factors, Energy conversion, Harmonic analysis, Permanent magnets, Stators, Winding",

author = "Greg Heins and D Ionel and Mark Thiele",

year = "2013",

doi = "10.1109/ECCE.2013.6647382",

language = "English",

isbn = "978-147990335-1",

pages = "5048--5055",

booktitle = "Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE",

publisher = "IEEE, Institute of Electrical and Electronics Engineers",

address = "United States",

note = "IEEE Energy Conversion Congress and Exposition (ECCE 2013), ECCE ; Conference date: 15-09-2013 Through 19-09-2013",

}

Heins, G, Ionel, D & Thiele, M 2013, Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores. in Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE. IEEE, Institute of Electrical and Electronics Engineers, pp. 5048-5055, IEEE Energy Conversion Congress and Exposition (ECCE 2013), Denver, United States, 15/09/13. https://doi.org/10.1109/ECCE.2013.6647382

Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores. / Heins, Greg; Ionel, D; Thiele, Mark.

Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE. IEEE, Institute of Electrical and Electronics Engineers, 2013. p. 5048-5055.

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper published in Proceedings

TY - GEN

T1 - Winding factors and magnetic fields in permanent magnet brushless machines with concentrated windings and modular stator cores

AU - Heins, Greg

AU - Ionel, D

AU - Thiele, Mark

N1 - Conference code: 2013

PY - 2013

Y1 - 2013

N2 - Removing some sections of the stator yoke in a permanent magnet brushless machine can be beneficial for reducing punching waste and simplifying motor manufacture. However in some cases, restricting the possible flux paths in this way will have a detrimental impact on the torque and air-gap harmonics. This paper discusses the potential implications of modular stator core arrangements and presents the air-gap flux density harmonics and winding factors for potential slot/pole combinations. FEA simulations are presented to support the analytical calculations. The analysis suggests that the performance reduction from using a modular stator is minimal when the number of slots and poles are similar but drops off substantially when this is not the case. A modular core stator will increase the MMF sub-harmonics due to the magnet field but can reduce the sub-harmonics due to the armature if a single layer winding is used. The effect of slotting is very similar for a modular and conventional core machine and FEA results match previously published analytical analyses.

AB - Removing some sections of the stator yoke in a permanent magnet brushless machine can be beneficial for reducing punching waste and simplifying motor manufacture. However in some cases, restricting the possible flux paths in this way will have a detrimental impact on the torque and air-gap harmonics. This paper discusses the potential implications of modular stator core arrangements and presents the air-gap flux density harmonics and winding factors for potential slot/pole combinations. FEA simulations are presented to support the analytical calculations. The analysis suggests that the performance reduction from using a modular stator is minimal when the number of slots and poles are similar but drops off substantially when this is not the case. A modular core stator will increase the MMF sub-harmonics due to the magnet field but can reduce the sub-harmonics due to the armature if a single layer winding is used. The effect of slotting is very similar for a modular and conventional core machine and FEA results match previously published analytical analyses.

KW - Air-gap flux densities

KW - Analytical analysis

KW - Analytical calculation

KW - Concentrated winding

KW - FEA simulation

KW - Modular stators

KW - Permanent-magnet brushless machines

KW - Winding factors

KW - Energy conversion

KW - Harmonic analysis

KW - Permanent magnets

KW - Stators

KW - Winding

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DO - 10.1109/ECCE.2013.6647382

M3 - Conference Paper published in Proceedings

SN - 978-147990335-1

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BT - Proceedings of Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

PB - IEEE, Institute of Electrical and Electronics Engineers

T2 - IEEE Energy Conversion Congress and Exposition (ECCE 2013)

Y2 - 15 September 2013 through 19 September 2013

ER -